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#import "ConcreteWebSite.h"
@implementation ConcreteWebSite
- (void)use:(User *)user {
NSLog(@"网站分类:%@ 用户名字:%@", self.webName, user.userName);
}
@end
User的代码如下：
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#import <Foundation/Foundation.h>
@interface User : NSObject
@property (nonatomic, copy) NSString *userName;
@end
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#import "User.h"
@implementation User
@end
至此，享元模式的代码已经完成了，我们来看下在客户端怎么使用享元模式，代码如下：
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#import "ViewController.h"
#import "WebSiteProtocol.h"
#import "WebSiteFactory.h"
#import "ConcreteWebSite.h"
#import "User.h"
typedef id<WebSiteProtocol> WebsiteType;
@interface ViewController ()
@end
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@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 通过工厂方法返回各种具体享元对象,维护池中的享元对象
WebSiteFactory *factory = [[WebSiteFactory alloc] init];
// 返回具体的享元对象
WebsiteType type1 = [factory getWebSiteCategory:@"首页"];
User *user1 = [[User alloc] init];
user1.userName = @"张三";
// 享元对象都具有use方法
[type1 use:user1];
WebsiteType type2 = [factory getWebSiteCategory:@"商店"];
User *user2 = [[User alloc] init];
user2.userName = @"李四";
[type2 use:user2];
WebsiteType type3 = [factory getWebSiteCategory:@"案例"];
User *user3 = [[User alloc] init];
user3.userName = @"王五";
[type3 use:user3];
NSInteger count = [factory getWebSiteCount];
NSLog(@"个数: %ld", (long)count);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
